3156920 has 48 divisors (see below), whose sum is σ = 7707960. Its totient is φ = 1163136.

The previous prime is 3156887. The next prime is 3156929. The reversal of 3156920 is 296513.

It is a super-2 number, since 2×3156920² = 19932287772800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3156920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3156929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6527 + ... + 6993.

Almost surely, 2^3156920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3156920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3853980).

3156920 is an abundant number, since it is smaller than the sum of its proper divisors (4551040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3156920 is a wasteful number, since it uses less digits than its factorization.

3156920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 3156920 is about 1776.7723545801. The cubic root of 3156920 is about 146.6969863855.

The spelling of 3156920 in words is "three million, one hundred fifty-six thousand, nine hundred twenty".